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A. CUOGHI.

VALVE GRINDER.

APPLICATION HLED Junzzz.

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VALVE GRINDER.

APPLICATION FILED JUNE 22.1918.

1,315,909. Patented Sept. 9, 1919.

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.ATENT OFFICE.

ASH'BERT CUOGHI, 0F BROOKLYN, N'EW YORK.

VALVE GRINDER.

Specification of Letters Patent.

Patented Sept. 9, 1919.

Application led .Tune 22, 1918. Serial No. 241,396.

Zh all 'whom it may concern:

Be it lrnown that I, Asi-msnm CUoerIr, a citizen o'l' the United States, residing at Brooklyn, in the county of Kings and State oi New York, have invented new and useful Improvements in Valve-Grinders, of which the :following a specification.

This invention relates to valve grinders, the object in view being to provide an accurate and reliable device 'for grinding the valves of engines and particularly the valves of internal combustion engines, the improved valve grinder embodying a light portable electric motor supported by the 'trame of the device and serving to impart oscillatory motion to a valve oscillating head which is j ournaled in the trame of the device, the whole having combined therewith a novel arrangement of controlling handles by means of which the device may be accurately and conveniently held in proper relation to the valve being ground and more or less pressure applied to the valve manually during the grinding opera tion.

With the above and other objects in view, the invention consists in the construction, combination and arrangement of parts, as herein described, illustrated and claimed.

In the accompanying drawings:

Figure 1 is a top plan view of grinder.

Fig. 2 is a bottom plan view of the same.

Fig. 3 is a side elevation of the valve grinder.

Fig. 4 is a side elevation looking toward the opposite side.

Fig. 5

the Vvalve is an end view of the device looking toward the valve oscillating head.

Fig. 6 is an elevation looking toward the opposite end of the valve. j

The valve grinder, contemplated in this invention comprises a frame designated gene ally at A, said frame having a bottom wall 1 and upstanding walls 2 arranged in spaced parallel relation to each other. The 'frame also comprises a transversely extending top bearinfr plate 3 and extending upwardly from tlic latter is a tubular handle socket Il, in which suitable handle 5 is flleaichably fitted. j

Below the top bearing plate 3 there is mounted a normally vertical oscillatory valve turning head 6 which is mounted in a bearing 7 in the top plate 3 and which also extends through a bearing 8 in the bottom of the frame beneath which, said oscillatory head is provided with a bit receiving chuck 9 having a tool holding set screw 10 enabling different tools to be used in conjunction with the valve grinding device, said tools being shaped to engage valve heads of different types and designs in order to impart oscillator n'iovenlents to the valve to edect a grin( ing o1 the valves and valve seats.V

Extending off from one side of the head 6 is an operating arm 11 to which is connected by a universal joint l2, a rod or pitman 18 which is connected to a wrist pin or crank arm 1st extending from one side of a gear 15 mounted upon a rotary shaft 16 journaled in the upright portions 2 of the frame. The gear 15 meshes with a pinion 17 on a coun tershaft 1S having also fast thereon a gear 19 which meshes with a pinion 20 on the armature shaft 21 of a small electric motor 22 which is supported between the side members 2 of the frame and supported in relation thereto by cross members or pins 23.

Secured ixedly to the bottom 1 of the frame is a longitudinally extending tubular handle socket 2st in which a removable handle 25 is fitted. The device is thus provided with two handles, one of which stands in a normal vertical position and the other of which stands in a normal horizontal position. This arrangement of handles enf ables the device to `be accurately manipulated and heldduring the valve grinding operation and it also enables any desired pressure to be brought to bear on the valve during the grinding operation as said vertical handle is positioned directly above and .in line with the valve turning. tool. By means of the horizontally extending handle, the device, as a whole, may be bodily turned, during the grinding operation so that the valve and lvalve seat may b'e 'ground uni formly and accurately.

A portable hand implement for grinding valves, comprising a frame, an oscillatory Valve turning head journaled in said frame, handle extending from said frame Substanan electric motor mounted 1n sald frame, tlally at a right angle to the first named eonneetlng means between said Inotoi` and handle, for turning the trame and Varylng said oscillatory heads, for actuating the latthe limits of oscillation of the valve. 10 5 tel', a pressure regulating handle extending In testimony whereof I afix my signature. upwardly from said frame, and a second ASHBERT CUOGHI.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

